[tor-bugs] #33871 [Core Tor/sbws]: Scale exactly as torflow does?

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#33871: Scale exactly as torflow does?
-------------------------------------------------+-------------------------
 Reporter:  juga                                 |          Owner:  juga
     Type:  defect                               |         Status:
                                                 |  assigned
 Priority:  Medium                               |      Milestone:  sbws:
                                                 |  1.1.x-final
Component:  Core Tor/sbws                        |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  sbws-majority-blocker, sbws-roadmap  |  Actual Points:
Parent ID:  #33775                               |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by mikeperry):

 Juga: Your analysis in `#1` is correct to my memory, and I agree probably
 not causing this issue.

 Re `#2` and `#3`: whats is the sbws torrc? TorFlow sets all the aggressive
 consensus and descriptor fetching options, so it may have descriptors
 *not* in the consensus, even. Or descriptors for relays oscillating in the
 consensus.

 Torflow *also* uses Tor 0.2.9, which may have different descriptor vs
 microdescriptor fetching behavior. If you are using microdescriptors, you
 might also not be getting fresh enough relay data, because those have to
 be generated by at least one consensus process.

 I think these are more likely culprits for this specific ticket.

 Here is the relevant torrc piece, which I think may behave differently
 with Tor 0.2.9:
 {{{
 FetchUselessDescriptors 1
 # Workaround for Tor #24110, tracked in TorFlow #24094
 UseMicrodescriptors 0
 __LeaveStreamsUnattached 1

 # Bad idea? Too much consensus update activity?
 FetchDirInfoExtraEarly 1
 FetchDirInfoEarly 1
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33871#comment:11>
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